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The Advantages And Disadvantages Of LED Light Bulbs

Since the compact florescent light bulb has started to quickly replace the aging incandescent light bulb lately, a different sort of bulb is emerging that may replace them both. The light emitting diode (LED) bulb has features that make it a better technology.

While the incandescent bulb makes light within a vacuum and the compact florescent bulb does so in a tube, the LED is referred to as solid-state lighting. It is solid state as it uses solid matter, a semiconductor, to generate light.

The semiconductor is created with both a positively and negatively charged part. The positive layer has small openings for the free electrons from the negative component to go through. When an electrical charge is applied to the semiconductor, a circulation of excited electrons moving through the holes emits a light.

The two great advantages of LED light bulbs are their long life and energy efficiency. They only use roughly one tenth as much electricity as traditional bulbs and therefore offer big financial savings in power costs as well as a reduced carbon footprint. This actually makes them both cost effective and eco friendly.

Their solid state construction and very low heat emissions give them a longer lifespan. LED light bulbs significantly outlast even compact florescent bulbs and may easily last for a decade or longer in regular use. This not only saves on the cost of the bulb, but it also saves time and replacement costs. Better suited to survive rough handling and outside conditions, a LED light bulb could be relied on to work when required most.

Since they attain their full brightness nearly immediately and are actually mercury free, LEDs solve two major problems that compact fluorescent bulbs have (mercury content and lag time in reaching full brightness).

LED light bulbs are designed to emit an extremely directional light so the light can be aimed precisely where it is required. Also, their light is closer to the color of daylight, which research indicate helps people keep alert.

Till recent changes in the technology, the structure of the LED induced a lot of the light to be trapped inside. This in addition to the bluish light they often emitted caused a dimmer light that made LEDs unpleasant for home usage.

LEDs are now much brighter though and can emit exactly the same soft, white light regular bulbs do.

One downside with LEDs that has not been corrected yet is cost. While their energy savings and really long life mean LEDs are cost-effective and save money in the long term, they're very unlikely to attain mass consumer acceptance until their prices come more in step with other forms of bulbs. Although their costs are coming down, LED light bulbs are still relatively expensive.

As soon as their costs come down more, LEDs are likely to become the standard and dominate lighting until a greater technology appears.